iptman
SILVER Star
I was quite a bit off since I went to 31s and 3.70 diffs (2 different overdrives). The numbers I gave them were (reads:actual) 20:22, 40:46, 50:59.
Pretty quiet in here... what are you working on? (12 Viewers)
- Thread starter Stumpalama
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Rock on.
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iptman
SILVER Star
Looking over my 40 tonight I pulled off the radiator cap and saw metallic looking junk in the fill spout. Almost looks like wet graphite powder. Anyone seen this before? Something to worry about or keep an eye on it? I'll be taking my daughter on our annual day trip down Skyline Drive in a few weeks so don't want to risk any issue then. The radiator is only a couple years old.
Stumpalama
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What are you using as coolant and H20? What is the ph of your mix? Could be aluminum/ steel/ brass leaching/electrolysis. Also saw something about silica precipitating out when using mineral rich water. (Spring for distilled h20 if you have hard water).
Read this: Grey stuff in rad opinion
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iptman
SILVER Star
@OTRAMM swapped in the radiator for me and I think he uses 50/50 green premix nowadays. I just added another pint and a half of distilled water last night. I also checked the overflow bottle and I see that gray stuff in there (dry otherwise). I'm going to take it for a long drive today and see if there's any more in the fill neck after it cools down. Based on the link you posted it seems this is just normal.
Stumpalama
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Could also be residual from years past coming back around. If the system wasn't chemically flushed then all that gunk was still hanging out in the passages.
Devilmans Hand
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I just noticed the same grey gunk in my radiator hose too. I suppose a flush is in order with some new green.
I just posted this in the 40 section, but figure I would tap the club as well.
The holes for the two short bolts that go through the exhaust manifold into the intake manifold are wrung out. The last person who did this job rethreaded one of the holes to 1.5. The other hole is 1.25 but it stripped when I took it apart.
What is the standard procedure here? Helicoils?
The holes for the two short bolts that go through the exhaust manifold into the intake manifold are wrung out. The last person who did this job rethreaded one of the holes to 1.5. The other hole is 1.25 but it stripped when I took it apart.
What is the standard procedure here? Helicoils?
hmm header lol
I have read about difficulties with getting those to seal, but if that might be the better way to go.
Are you going to have the manifold shaved? I would think a machine shop should be able to recommend a good quick repair.
Same thing happened to me. I installed Helicoils that I trimmed down with a die grinder. Went together no problem. Not so sure if they will stay in place the next time I remove the bolts.
Be happy to drop the the kit and some coils in the mail if you want to try that route.
Same thing happened to me. I installed Helicoils that I trimmed down with a die grinder. Went together no problem. Not so sure if they will stay in place the next time I remove the bolts.
Be happy to drop the the kit and some coils in the mail if you want to try that route.
Helicoil repair is fine just be careful you drill straight and take your time tapping and installing the helicoils.
Just ordered a helicoil set. Thanks for the offer Charlton, but it should be something I have in the garage. Generic helicoils anyway.
Charlton, did you have to grind down the insert?
Charlton, did you have to grind down the insert?
I used the mounting bolt to determine how many threads are needed and then put the Helicoil in a vise & cut off the excess rings with a Dremel and a cutting wheel. It was pretty easy. I made the length so that each end was 1 thread from the surface. If you are careful not to break the tang until you are ready, you can insert and remove the coil and trim to fit.
Doesn’t look like enough wall to put inserts in but if it is way better
I agree with you Burl inserts much better than helicoils but only IF there's enough meat for them.
I was also going to try and paint the exhaust manifold with engine paint. Waste of time? I.e., will it just come off?
If it was me, I probably couldn’t resist painting it, but I’d have it media blasted first, and then at that point you might as well get it jet hot coated. So I say either do nothing or do it right.
iptman
SILVER Star
I had my 80's manifolds coated with high-temp Cerikote and that crap has worn completely off.
